Woven wire tube covered belt



No v. 4, 1947. M. A. CROSBY 2,429,993

WOVEN WIRE TUBE COVERED BELT Filed March 8, 1945 .155 J1EE 25 Maze :3 v

I INVENTOR 22 BY MELVIN A. CROSBY ATTORNEY Patented Nov. 4, 1947 UNITED STATES PATENT OFFICE- WOVEN WIRE TUBE COVERED BELT Melvin A. Crosby, Dayton, Ohio, asslgnor to The Dayton Rubber Company, a corporation of Ohio Application March 8, 1943, Serial No. 478,432 7 Claims. (01. 74-233) or along both of these surfaces.

"may be roughly square The nature of the present, invention will be fully understood from the following description taken in connection with the annexed drawing wherein:

Fig. 1 illustrates the manner in which the belt of the present invention may be used in a single belt V-drive;

Fig. 2 illustrates the manner in which the belt of the present invention may be used in a multibelt V-drive;

Fig. 3 illustrates the woven metal cloth tube employed in the practice of the present invention;

Fig. 4 is a view of the roughly shaped body from which the belt of the present invention is produced;

Fig. 5 illustrates the manner in which the belt of the [present invention is molded;

Fig. 6 is a cross sectional view of belt of the present invention; and I Fig. '7 is a sectional view of a portion of the belt of the present invention illustrating the manner the finished a tightly around the mold and the belt therein.

in which the tube of Fig. 3 is spliced to obtain an endless belt.

Referring to the drawing in detail, 10 is a V- belt ofthe present invention driving the V-pul-' leys H and 12 in a, typical single belt V-drive; and in Fig. 2, l3 represents a plurality of V-belts of the presentinvention driving a plurality of V-pulleys l4 and ill in a. typical, multi-belt V- drive. I

The belt of the present invention is ma'nu factured by filling the hollow portion 16 of the woven metal tube l1 (see Fig. 3) with a plurality of layers adapted to comprise -tensi on,- neutral axis and compression sections in a finished belt.

These layers may be introduced in the hollow portion [6 of. the woven rnetal tube H "by extrusion or otherwise. For example, the tube H on two opposite surfaceg and suitablelayers-ofj.

I material adapted to comprise the tension. neutral y axis and compression sections of aflbelt' intro-:- 'duced therein in proper juxtaposition. The filled by pressure applied through the'means of the rubber composition l I passing through the meshes in the course'of the vulcanizlng operation. Of course, those skilled in f 2 tube is then roughly shaped to the form of a V-belt (see Fig. 4) and will then comprise an outer wrapper of woven metal cloth [8, atenslon layer of rubber composition IS, a neutral axis layer 20 of rubber composition including a plurality of cords 2| embedded therein and a com-- pression layer 22. The built-up belt body thus resulting (see Fig. 4) is then placed in a suitable mold (see Fig. 5) comprising a mold half '22 and a second mold half 24. The mold halves 23 and 24 are locked in lace by suitable means and a plurality of layers of wetted fabric 25 are wrapped The mold is then placed in a, vulcanizer wherein it is subjected to heat. The drying of the wet wrappers-25 placed over the belt shrinks the layers of fabric 25' and exerts pressure on the body of the belt thus causing it to conform in shape to the general contour of the mold. The effect of the heat and pressure exerted on the belt during the vulcanizing step causes a portion of the rubber composition in the tension, neutral axis and compression sections to exude or push out. through the meshes of the woven metal cloth l8 surrounding the body of the belt with the result that at the termination of the vulcanizing step (see Fig. 6) the belt has a thin layer or coating of rubber composition 26 therearound and covering the woven metal cloth wrapper l8, Therefore. the frictional engagement between the belt and the pulley is actually between the thin coating of rubber composition 26 on the surface of V the belt and the metal face of the pulley and as the thin coating of rubber composition 26 is abraded away, the woven metal cloth wrapper l8 will be exposed and, will come into-contact with the surface of the pulley; however, a suflicient; amount of rubber will remain exposed at the points between the individual strands of wire that frictional engagement between the rubber of the belt and the'metal of the pulley will ree main although the rate of wear will be substan-. I tially reduced due to the abrasion resistance of the metal in the Woven metal cloth wrapper'lfl.

In Fig. 7 there is illustrated the manner in which thewoven metal fabric tube l'l'which even; T tually becomes the'woven'inetalwrapper l8 may I be spliced together by telescoping one end of'the tube within the other in the event that it is desired; to produce'an endless belt.- If the two 'ends of the tube are telescoped, as shown in Fig. '7, they will become. permanently attached to each other the art will understand that it is not necessary to produce an endless belt in this manner nor to splice the ends of this tube in this manner. Belts of any length may be obtained with ease according to the method of the present invention by simply uniting the two ends of the finished belt by means of any suitable belt connector such as are readily obtainable in the market andare known to those skilled in the art.

It will be understood that while there has been described herein and illustrated in the drawing a tubular member of woven wire cloth, the belt of the present invention may be manufactured and substantialy the same article obtained by wrapping a plurality of superposed layers adapted to comprise tension, neutral axis and compression sections of a belt in woven metal cloth instead of inserting said layers in a tubular member of woven wire cloth as hereinbefore described.

It will be further understood that it is advantageous'to have the wires in the tubular member herein described and illustrated in the drawing or r 4 ers of rubber composition comprising tension, neutral axls and compression sections.

4. As a new article of manufacture, a belt comprising a hollow member of woven wire seamless in the woven metal cloth wrapper to which reference has just been madeat a bias with respect to the body of the belt in order thereby to facilitate the flexing or bending of the finished belt as it passes over pulleys or sheaves of small diameter.

It will be further understood that the cords forming part of the neutral axis section may be of organic material such as cotton or rayon or of in-.

organic material such as glass fibers and the like.

It will be understood that while there have been illustrated in the drawing and herein described certain embodiments of the present invention, it is not intended thereby to have this invention limited to or circumscribed by the specific de-' tails of construction, arrangement of parts, procedures, or products herein described or illustrated in the drawing in view of the fact that the present invention may be modified according to individual preference and conditions without departing from the spirit of this disclosure and the scope of the appended claims.

I claim:

1. As a new article of manufacture, a rubber.

cloth having disposed therein superposed layers of rubber composition comprising tension, neutral axis and compression sections, said neutral axis section comprising a, plurality of cords laid parallel to each other and along the longitudinal axis of the belt.

5. As a new articleof manufacture, a belt of V-construction comprising an outer wrapper of woven metal cloth, superposed layers of rubber composition comprising tension, neutral axis and compression sections, and a thin coating of rubber composition over said outer wrapper of woven metal cloth, said wrapper comprising a seamless preformed sleeve into which said sections as a whole have been inserted.

6. As a new article of manufacture, a belt of V-construction comprising an outer wrapper of woven metal cloth, superposed layers of rubber omposition comprising tension, neutral axis and compression sections, and a thin coating of rubber composition over said outer wrapper of woven metal cloth, said neutral axis section comprising a plurality of cords lying parallel to each other and along the longitudinal axis of the belt, said wrapper comprising a, seamless preformed sleeve into which said sections as a whole have been inserted.

7. As a new article of manufacture, a rubber belt of V-construction comprising tension, neutral axis'and'ccmpression sections and having a wrapper of woven metal cloth of preformed seamless sleeve construction into which said sections as a whole have been inserted arranged around said belt, the wires of said wrapper being on a bias with regard to the longitudinal axis of said belt.

- MELVIN A. CROSBY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

